reformatting
FirstUserActivity was registered in AndroidManifest.xml
buttonDeleteUser was added to nfc_main_temporary.xml layout
remoteTempUser menu item was added to menu/base_activity.xml
uses BaseActivity.preference member
FirstUserActivity uses BaseActivity as its base class
uses null instead of "" for 'no user" state
getCardId and getCardType was added as accessors.
remoteTempUser menu item is handled in BaseActivity
using Preference in ReceiveDataService.java
assertions were added to Preference.java
using Preference in CountRelayTime.java, reformatting
using Preference in SendDataService.java, reformatting
using Preference in RegistrationCode.java
using Preference in CountTimeFirstUser.java, reformatting
using Preference in CountTimeAllUser.java
Android Studio was updated
using preference member in FirstUserActivity.java
assertion lines were added
user deletion was implemented in TempUserActivity